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【题目】The number of volunteers in our city ________ growing and 50% of them ________ women.

A.is; isB.is; areC.are; areD.are; is

【答案】B

【解析】

句意:我们城市的志愿者数量在增长,50%的志愿者是女性。

考查be动词的用法。第一个空格的意思是志愿者数量在增长,the number of做主语时,谓语用单数,故be动词用is;第二空指50%的志愿者是女性,百分数后的主语志愿者是可数名词,故be动词用复数形式,are。故选B

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